Bid guide
How to bid on Construction Services for the Red Line Extension with Chicago Transit Authority
What the CTA is buying
The Chicago Transit Authority (CTA) is seeking proposals for construction services. This work is specifically for the Red Line Extension (RLE) project, focusing on the 120th Yard, Shop, and Substation.
This is an opportunity for construction firms to engage in a significant public transit infrastructure project in Chicago, IL.
Key dates and deadlines
The deadline for submitting proposals is September 30, 2026, at 6:00 PM ET. All responses must be submitted exactly as directed in the solicitation before this time.
Late submissions are typically not accepted, so it is crucial to plan your response well in advance of the deadline.
Who this opportunity suits
This Request for Proposals (RFP) is suitable for construction companies experienced in large-scale infrastructure projects, particularly those involving transit facilities, yards, shops, and substations.
Firms with a strong background in civil engineering, rail infrastructure, and related construction services will find this opportunity relevant.
How to respond
To access the full solicitation details and documents, you need to go to the City of Chicago Vendor & Contract Search portal. Once there, review all specifications, contact information, and any addenda.
For eProcurement bids, documents are typically linked to the city's iSupplier portal. Ensure you follow all submission instructions precisely as outlined in the solicitation before the due date.
Tips for a competitive response
Thoroughly read the entire Request for Proposals to understand all requirements, scopes of work, and evaluation criteria. Pay close attention to any specific technical specifications for the 120th Yard, Shop, and Substation.
Prepare a detailed and well-organized proposal that directly addresses each section of the RFP. Highlight your firm's relevant experience with similar construction projects, especially those involving public transit or complex infrastructure. Ensure all required forms and certifications are completed accurately and submitted on time.
See the live bid — deadline, agency details, and how to respond
Dates and requirements can change via addenda; always verify on the bid page and at the original source before responding.
View this bid on BiddingSimpleThis guide was prepared by BiddingSimple from the solicitation’s public posting. It is not official guidance from Chicago Transit Authority; the original posting controls.